XOS/NEM charts, use a global registry var, split docker image name/tag/pullPolicy

Change-Id: I7f3457882830de050d1357254fc5483faf91d03f
diff --git a/xos-services/vmme/values.yaml b/xos-services/vmme/values.yaml
index b6d6358..2fc8801 100644
--- a/xos-services/vmme/values.yaml
+++ b/xos-services/vmme/values.yaml
@@ -22,9 +22,10 @@
 nameOverride: ""
 fullnameOverride: ""
 
-imagePullPolicy: 'Always'
-
-synchronizerImage: "xosproject/vmme-synchronizer:{{ .Chart.Version }}"
+image:
+  repository: 'xosproject/vmme-synchronizer'
+  tag: '{{ .Chart.AppVersion }}'
+  pullPolicy: 'Always'
 
 xosAdminUser: "admin@opencord.org"
 xosAdminPassword: "letmein"
@@ -40,6 +41,7 @@
 global:
   proxySshEnabled: true
   proxySshUser: "root"
+  registry: ''
 
 resources: {}